Novak Djokovic was sensationally disqualified from the Australian Open after accidentally hitting a line judge with a ball struck in annoyance.

Novak Djokovic was sensationally disqualified from the Australian Open after accidentally hitting a line judge with a ball struck in annoyance. The top seed and 17-time grand slam champion had just dropped serve to trail Spanish opponent Pablo Carreno Busta 6-5 in the opening set of their fourth-round match on Arthur Ashe Stadium. Djokovic, who…